Mpox Clade Ib spreads fast as scientists struggle to track mutations and transmission

New Congo strain is evolving faster than labs can follow

A new mpox strain, clade Ib, has emerged in Congo and is evolving quickly as it spreads among humans. Researchers warn that its transmission patterns and potential severity are harder to monitor, especially because many laboratories in Africa lack adequate resources. The WHO has responded with another health emergency declaration as cases rise.